Split sprocket



J. J. BOCCHINO SPLIT SPROCKET March 29, 1949.

2 Sheets-Sheet 1 Filed March 23, 1945 INVENTOR. mCfOSGPh (f fiocchjlnoMarch 29, 1949. J, BQCCHlNQ 2,465,570

' SPLIT SPROCKE'I Filed March 23, 1945 2 Sheets-Sheet 2 & 7.5

IN VEN TOR.

Wise/70h Jfiocchjmo A'I'I'U RN EYS Patented Mar. 29, 1949 UNITED STATESPATENT OFFICE v SPLIT SPROCKET Joseph J. Bocchino, Dover, N. J.

Application March 23, 1945, Serial No. 584,405

1 Claim. 1

My present invention, in its broad aspect, has to do with improvementsin sprocket wheels, and more particularly, it is my purpose to providean improved, split sprocket wheel, the respective elements of which aredetachably connected together so that the sprocket may be quicklyapplied or detached from its shaft mounting for purposes of replacement,adjustment, repair or removal. My split sprocket is especially designedfor use with conveyors, as for instance milk bottle conveyors and thelike, where the conveyor and sprockets are subjected to a constantlydamp, wet atmosphere and repeated drenchings with water causing theconveyor sprockets to rust and quickly wear and become inoperative orinapt for use to the end that many have to be replaced with consequentloss of time, labor and expense in taking down shafting to remove andreplace sprockets thereon. My present sprocket is designed to greatlyreduce expense and loss of time due to idleness of a conveyor to replacesprockets, but also to reduce expense and cost of repair parts. Mysprockets, furthermore, may be replaced without disturbing the alignmentand shafting of a conveyor, and the elements of my split sprockets fitperfectly and can be quickly set up and taken down.

My split sprocket is cast in one piece with elongated slots formed bycasts so that it is merely necessary to insert a cold chisel in theslots to split the sprocket to form perfectly mating halves. Thesprocket castings are clean and require no grinding of teeth, and thechain carried by my sprockets fits perfectly. There is little machining,since the shaft bore, keyway, and drill and tap holes for set screws tolock the key in place on the shaft, and the holes for the clamp boltsare all formed prior to splitting the sprocket, thereby insuring perfectfit and registry of parts.

Other and equally important objects and advantages of my invention willbe apparent from the following description and drawings, and it ispointed out that changes in form, size, shape, materials, andconstruction and arrangement of parts is permissible and within thepurview of my broad inventive concept, and the scope of the appendedclaim.

In the drawings, wherein I have illustrated a preferred form of myinvention:

Figure 1 is a front elevation of my sprocket of the type having twelveteeth;

Figure 2 is a section on the line 2--2 of Fi ure 1;

Figure 3 is a front elevation of my sprocket of the type having nineteeth;

Figure 4 is an edge view of the type shown in Figure 3;

Figure 5 is a section on the line 55 of Figure 3;

Figure 6 is a section on the line 6-5 of Figure 1;

Figure 7 is a section on the line I1 of Fi ure 3;

Figure 8 is a front elevation of my sprocket of the type having eightteeth;

Figure 9 is a section on the line 99 of Figure 8;

Figure 10 is a section on the line I0I0 of Figure 8;

Figure 11 is a front elevation of another form of my nine toothsprocket; and

Figure 12 is a section on the line I2-I2 of Figure 11.

In the drawings, wherein like characters of reference are used todesignate like or similar parts throughout the several views:

The numeral I designates the body of my sprocket which has teeth 2, aWeb 3 and a hub 4. The hub has a shaft bore 5 and key 6 and a keylocking bolt 1 in the boss 8 of the web. The web may be on the diameter,as shown in the eight and twelve toothed forms of Figures 1 and 8, or,off-set from the shaft bore, as in the nine tooth forms of Figures 3 and11. In casting the sprocket, elongated slots 9 and ID are formed in theweb from cores, and after boring and machining the sprocket, eachsprocket is split by a cold chisel inserted in the slots, to formperfectly fitting elements Which are bolted together by bolts II and I2so that the sprockets may be mounted on shafts by simply clamping theelements together by the bolts I I and I2, and dismounted in the samemanner for adjustment or replacement.

From the foregoing it is believed that the operation and advantages ofmy invention will be apparent, but it is again emphasized thatinterpretation of its scope should only be conclusive when made in thelight of the subj oined claim.

Iclaim:

A sprocket comprising an integral sprocket rim, sprocket teethcircumferentially spaced thereon, a web attached to and integral withopposed portions of said sprocket rim, said Web having a bore wherebysaid sprocket may be mounted on a shaft, elongated slots in said web onopposite sides of said bore, each said elongated slot extendingsubstantially radially between the bore and the rim and terminatingwithin predetermined distances from the respective peripheries of saidrim and bore, said slots being adapted to receive a tool whereby saidsprocket can be split along said Web into mating portions for assemblyabout the shaft, and bolt means extending transversely through said webon opposite sides of the bore and in the region of said elongated slotsfor securing the mating portions together.

JOSEPH J. BOCCHINO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 728,466 I-Iuse May 19, 19031,623,814 Scott Apr. 5, 1927 2,382,740 Noffsinger Aug. 14, 1945 FOREIGNPATENTS Number Country Date 394,706 Great Britain July 3, 1933

